/// <summary>
/// Navigates to channel listings.
/// </summary>
/// <param name="providerName">Name of the provider.</param>
public void NavigateToChannelListings(ITVProvider provider)
{
// prepare list of menuItems for the new menu we're going to navigate to.
List <MenuItemModel> menuItems = new List <MenuItemModel>();
// Show the "Scanning for Matches" loading modal
ModalModel.GetInstance.ModalUserControl = new ScanningForMatchesModal();
_scanningForMatchesModal = ModalModel.GetInstance.ModalUserControl as ScanningForMatchesModal;
_scanningForMatchesModal.progressBar1.Min = 0;
_scanningForMatchesModal.progressBar1.Max = provider.Channels.Count;
_scanningForMatchesModal.progressBar1.Value = 0;
Task.Run(() =>
{
// Create new list?
if (this.TVProviderCacheEntities == null)
{
this.TVProviderCacheEntities = new List <TVProviderCacheEntity>();
}
// Do we have cached result we can use?
TVProviderCacheEntity providerCache = this.TVProviderCacheEntities.Where(m => m.providerName == provider.ProviderName).FirstOrDefault();
// Check if we have a cache and that the cache is not old (earlier than the TVSchedule object)
if (providerCache == null || providerCache.LastScanTime < this.Schedule.ScheduleDate)
{
// Create a new cache for the provider
providerCache = new TVProviderCacheEntity();
providerCache.providerName = provider.ProviderName;
providerCache.MenuItemModels = ScanForMatches(provider);
providerCache.LastScanTime = DateTime.Now;
// store provider cache in the cache
this.TVProviderCacheEntities.Add(providerCache);
menuItems = providerCache.MenuItemModels;
}
else
{
// Cache is good so just navigate to the menuItemModels
menuItems = providerCache.MenuItemModels;
}
this.Dispatcher.Invoke(() =>
{
// navigate to the new menuEntity
PageModel.GetInstance.NavigateForwards(menuItems);
// remove the "Scanning for Matches" modal
ModalModel.GetInstance.ModalUserControl = null;
// update the bread crumbs label
PageModel.GetInstance.DoBreadCrumbs(this._componentName);
});
});
}
/// <summary>
/// Scans for matches for a provider.
/// </summary>
/// <param name="provider">The provider.</param>
/// <returns></returns>
private List <MenuItemModel> ScanForMatches(ITVProvider provider)
{
// Cap the channel name lengths
Parallel.ForEach <IChannel>(provider.Channels, channel =>
{
// Cap the name length?
if (channel.Name.Length > 19)
{
channel.Name = channel.Name.Substring(0, 18) + "..";
}
});
// Get longest channel name for the padright
int longestChannelName = provider.Channels
.Select(m => m.Name)
.OrderByDescending(m => m.Length).First().Length;
int longestChannelNumber = provider.Channels
.Select(m => m.ChannelNumber)
.OrderByDescending(m => m.Length).First().Length;
// prepare results
List <MenuItemModel> result = new List <MenuItemModel>();
Parallel.ForEach <IChannel>(provider.Channels, channel =>
{
Parallel.ForEach <IProgramme>(channel.Programmes, programme =>
{
// Attempt to get files that match the TV show name.
List <MenuItemModel> matches = GetMatchesForProgramme(programme);
if (matches.Count > 0)
{
lock (obj)
{
result.Add(new MenuItemModel
{
DisplayText =
channel.ChannelNumber.PadRight(longestChannelNumber + 2) +
channel.Name.PadRight(longestChannelName + 2) +
Convert.ToDateTime(programme.ShowingTime).ToShortTimeString().PadRight(8) +
programme.ProgramName,
Tag = channel.ChannelNumber,
IsSelected = false,
FilePath = null,
ParentSelected = true,
IsVisible = true,
RelayCommand = new RelayCommand(() =>
{
// navigate to the list of files
PageModel.GetInstance.NavigateForwards(matches);
// update the bread crumbs label
PageModel.GetInstance.DoBreadCrumbs(this._componentName);
})
});
}
}
});
this.Dispatcher.Invoke(() =>
{
_scanningForMatchesModal.progressBar1.Value++;
});
});
// Show 100% progress for a 10th of a second
AutoResetEvent e = new AutoResetEvent(false);
this.Dispatcher.Invoke(() =>
{
_scanningForMatchesModal.progressBar1.Value = _scanningForMatchesModal.progressBar1.Max;
e.Set();
});
e.WaitOne();
Thread.Sleep(100);
// No matches found so add a blank button stating "No Matches found"
if (result.Count == 0)
{
result.Add(new MenuItemModel()
{
DisplayText = "No matches found..",
IsSelected = true,
IsVisible = true,
ParentSelected = true,
RelayCommand = new RelayCommand(() => { })
});
return(result);
}
else
{
// return the results sorted by the channel number
return(result.OrderBy(m => Convert.ToInt32(m.Tag)).ToList());
}
}
